/*
* Copyright 2011-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.regions;
import com.amazonaws.SDKGlobalConfiguration;
import com.amazonaws.util.EC2MetadataUtilsServer;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.runners.Enclosed;
import org.junit.runner.RunWith;
import java.io.IOException;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
/**
* Tests broken up by fixture.
*/
@RunWith(Enclosed.class)
public class InstanceMetadataRegionProviderTest {
/**
* If the EC2 metadata service is running it should return the region the server is mocked
* with.
*/
public static class MetadataServiceRunningTest {
private static EC2MetadataUtilsServer server;
private AwsRegionProvider regionProvider;
@BeforeClass
public static void setupFixture() throws IOException {
server = new EC2MetadataUtilsServer("localhost", 0);
server.start();
System.setProperty(SDKGlobalConfiguration.EC2_METADATA_SERVICE_OVERRIDE_SYSTEM_PROPERTY,
"http://localhost:" + server.getLocalPort());
}
@AfterClass
public static void tearDownFixture() throws IOException {
server.stop();
System.clearProperty(
SDKGlobalConfiguration.EC2_METADATA_SERVICE_OVERRIDE_SYSTEM_PROPERTY);
}
@Before
public void setup() {
regionProvider = new InstanceMetadataRegionProvider();
}
@Test
public void metadataServiceRunning_ProvidesCorrectRegion() {
assertEquals("us-east-1", regionProvider.getRegion());
}
}
/**
* If the EC2 metdata service is not present then the provider should just return null instead
* of failing. This is to allow the provider to be used in a chain context where another
* provider further down the chain may be able to provide the region.
*/
public static class MetadataServiceNotRunning {
private AwsRegionProvider regionProvider;
@Before
public void setup() {
System.setProperty(SDKGlobalConfiguration.EC2_METADATA_SERVICE_OVERRIDE_SYSTEM_PROPERTY,
"http://localhost:54123");
regionProvider = new InstanceMetadataRegionProvider();
}
@Test
public void metadataServiceRunning_ProvidesCorrectRegion() {
assertNull(regionProvider.getRegion());
}
}
}